On the ROG STRIX Z370-I GAMING BIOS page, it lists the 0426 and 5426 versions both updated on 2017/10/20. What's the difference between the two? If I intend to manually OC the system, is one BIOS preferred over the other?

Edit - NVM, Raja answered this question on one of the ROG Forum threads. "The only difference between them is that the 5426 build has ASUS Multicore Enhance enabled by default. Identical otherwise."